Gao, Xu http://orcid.org/0000-0001-6506-6084
Gào, Xīn
Zhang, Yan
Holleczek, Bernd
Schöttker, Ben
Brenner, Hermann
Funding for this research was provided by:
China Scholarship Council
Article History
Received: 19 January 2018
Accepted: 7 February 2019
First Online: 15 February 2019
Compliance with ethical standards
:
: The authors declare that they have no competing interests.